|
|
| (10 intermediate revisions not shown.) |
| Line 1: |
Line 1: |
| - | [[Image:1cgc.jpg|left|200px]] | |
| | | | |
| - | <!--
| + | ==DOUBLE HELIX CONFORMATION GROOVE DIMENSIONS AND LIGAND BINDING POTENTIAL OF A G/C-STRETCH IN B-DNA== |
| - | The line below this paragraph, containing "STRUCTURE_1cgc", creates the "Structure Box" on the page.
| + | <StructureSection load='1cgc' size='340' side='right'caption='[[1cgc]], [[Resolution|resolution]] 2.20Å' scene=''> |
| - | You may change the PDB parameter (which sets the PDB file loaded into the applet)
| + | == Structural highlights == |
| - | or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
| + | <table><tr><td colspan='2'>[[1cgc]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CGC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CGC FirstGlance]. <br> |
| - | or leave the SCENE parameter empty for the default display.
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> |
| - | -->
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1cgc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cgc OCA], [https://pdbe.org/1cgc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cgc RCSB], [https://www.ebi.ac.uk/pdbsum/1cgc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cgc ProSAT]</span></td></tr> |
| - | {{STRUCTURE_1cgc| PDB=1cgc | SCENE= }}
| + | </table> |
| - | | + | __TOC__ |
| - | '''DOUBLE HELIX CONFORMATION GROOVE DIMENSIONS AND LIGAND BINDING POTENTIAL OF A G/C-STRETCH IN B-DNA'''
| + | </StructureSection> |
| - | | + | [[Category: Large Structures]] |
| - | | + | [[Category: Bansal M]] |
| - | ==Overview== | + | [[Category: Heinemann U]] |
| - | The self-complementary DNA fragment CCGGCGCCGG crystallizes in the rhombohedral space group R3 with unit cell parameters a = 54.07 A and c = 44.59 A. The structure has been determined by X-ray diffraction methods at 2.2 A resolution and refined to an R value of 16.7%. In the crystal, the decamer forms B-DNA double helices with characteristic groove dimensions: compared with B-DNA of random sequence, the minor groove is wide and deep and the major groove is rather shallow. Local base pair geometries and stacking patterns are within the range commonly observed in B-DNA crystal structures. The duplex bears no resemblance to A-form DNA as might have been expected for a sequence with only GC base pairs. The shallow major groove permits an unusual crystal packing pattern with several direct intermolecular hydrogen bonds between phosphate oxygens and cytosine amino groups. In addition, decameric duplexes form quasi-infinite double helices in the crystal by end-to-end stacking. The groove geometries and accessibilities of this molecule as observed in the crystal may be important for the mode of binding of both proteins and drug molecules to G/C stretches in DNA.
| + | |
| - | | + | |
| - | ==About this Structure== | + | |
| - | Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CGC OCA]. | + | |
| - | | + | |
| - | ==Reference== | + | |
| - | Double helix conformation, groove dimensions and ligand binding potential of a G/C stretch in B-DNA., Heinemann U, Alings C, Bansal M, EMBO J. 1992 May;11(5):1931-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/1582421 1582421]
| + | |
| - | [[Category: Bansal, M.]] | + | |
| - | [[Category: Heinemann, U.]] | + | |
| - | [[Category: B-dna]] | + | |
| - | [[Category: Double helix]] | + | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:42:22 2008''
| + | |
